PT7C4307_13 Datasheet, PDF (13/15 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

PT7C4307
Real-time Clock Module (I²C Bus)
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1) Write via I²C bus
2) Read via I²C bus
a) Standard read
S
Slave address (7 bits)
write ^A
11010000
Addr. setting
Start
Slave address + write specification
A
C Address
K _{Specifies the read start address.(n)}
A Sr
Slave address (7 bits)
Read ^A
11 0 1 00 0 1
A
A
C Restart _{Slave address + read specification}
C
K
K
bit bit bit bit bit bit bit bit
76543210
A ^{bit bit bit bit bit bit bit bit}
76543210
A
bit
7
bit
6
bit
5
bit
4
bit
3
bit
2
bit
1
bit
0
/
A
P
Data read (n)
Data is read from the specified start
address and address auto increment.
A
C
Data read (n+1)
K _{Data is read from the specified start}
address and address auto increment.
A
C
Data read (n+x)
K _{Address auto increment to set the}
address for the next data to be read.
DATA TRANSFERRED
(X+1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED A NOT ACKNOWLEDGE(/A) SIGNAL
N Stop
O
A
C
K
2013-06-0002
PT0206-5 06/18/13
13